We started seeing Dr. Graham for fillers and Botox years ago on every Cape Town visit when he was located in Waterkant, and he's been so great throughout the years that we now do the hour drive to see him at his current location (i.e. not at all in a touristy area, though we do visit Delaire Graff in Stellenbosch whenever we go out to see him, so its not completely inconvenient). He's such a nice guy and aside from our plastic surgeon in NYC and a PA a plastic surgeon in Miami recommended for fillers (that we fly to Miami just to see a couple times a year), he is the only one we trust that actually knows what he's doing when it comes to fillers and botox (and we've been to countless in the states and London, and even a few in Sydney and Rio de Janeiro).
Botox and all neurotoxin products can definitely be used to shape the brow. The key lies in identifying which muscles are involved in animating the eyebrows. The corrugator and orbicularis muscles are mainly involved in lowering of the brow and the frontalis muscle in lifting the brow. Working with these muscles as a pulley system, balancing and dosing accordingly, one can shape the brow quite effectively. Start with a consultation with your aesthetic practitioner and they would be able to identify the best injection points for you and advise on the costs.